CN220435089U - Impeller and inflator pump - Google Patents

Abstract

The utility model relates to inflation equipment and discloses an impeller and an inflator pump, wherein the impeller comprises a blade disc and a blade assembly, the blade assembly is sequentially arranged at one end of the blade disc at intervals around the center of the blade disc, the impeller comprises a first blade and a second blade which are arranged at intervals, the second blade is positioned at one clockwise side of the first blade, one end of the first blade, which is close to the center of the blade disc, is enclosed into a first blade ring, one end of the second blade, which is close to the center of the blade disc, is enclosed into a second blade ring, and the diameter of the second blade ring is larger than that of the first blade ring. The inflator pump comprises an impeller, a shell and a motor. The second leaf circle that this application impeller on the second blade enclose is greater than the first leaf circle that first blade encloses, and this can increase the flow area of blade subassembly at the gas inlet port that is close to impeller center one end, makes it can the through-flow more gases, improves the gas conveying efficiency of pump.

Description

Impeller and inflator pump

Technical Field

The utility model relates to an inflation device, in particular to an impeller and an inflation pump.

Background

The inflator pump works by driving the impeller to rotate through the motor, and most of the conventional inflator pump is provided with an air inlet at the top, air enters from the air inlet and is thrown out from the periphery along the plane of the impeller through the acceleration of the impeller, but the blades of the impeller of the conventional inflator pump are all of the same size, so that the flow area of the inlet of the blades is not large enough, more air cannot be rapidly flowed through the inlet of the blades, and the air conveying efficiency of the inflator pump cannot be further increased at the same rotating speed.

Disclosure of Invention

Aiming at the technical problems, the utility model aims to provide the impeller and the inflator pump, wherein the second impeller ring surrounded by the second blades on the impeller is larger than the first impeller ring surrounded by the first blades, so that the flow area of the air inlet at one end of the blade assembly close to the center of the impeller is greatly increased, more air can flow through the air inlet, and the air conveying efficiency of the inflator pump is improved.

In order to achieve the above purpose, the utility model provides an impeller, which comprises a impeller disc and a blade assembly, wherein the blade assembly is sequentially arranged at one end of the impeller disc at intervals around the center of the impeller disc, the impeller comprises a first blade and a second blade which are arranged at intervals, the second blade is positioned at one clockwise side of the first blade, one end of the first blade, which is close to the center of the impeller disc, is enclosed into a first blade ring, one end of the second blade, which is close to the center of the impeller disc, is enclosed into a second blade ring, and the diameter of the second blade ring is larger than that of the first blade ring.

In some embodiments, the first blade and the second blade are each higher at an end closer to the center of the blisk than at an end farther from the center of the blisk, and the first blade is higher at an end closer to the center of the blisk than at an end closer to the center of the blisk.

In some embodiments, the vane assembly further comprises a third vane located on a clockwise side of the second vane and distal from the first vane, an end of the third vane proximate the center of the bladed disk enclosing a third annulus having a diameter greater than the diameter of the second annulus.

In some embodiments, the third blades are each higher at an end closer to the center of the blisk than at an end farther from the center of the blisk;

and one end of the second blade, which is close to the center of the impeller, is higher than one end of the third blade, which is close to the center of the impeller.

In some embodiments, the outlet position angle of the first vane is at a first preset angle, the inlet mounting angle is at a second preset angle, and the outlet mounting angle is at a third preset angle.

In some embodiments, the center of the impeller is raised upwards to form a convolution structure with monotonically decreasing cross section for diversion; the blade assembly adopts an axial 2D design.

According to another aspect of the present application there is further provided an inflator comprising an impeller, a housing and a motor as described in any of the above preferred embodiments; the shell comprises an impeller shell and a motor shell, wherein one end of the impeller shell is opened to form an air inlet, the impeller shell is provided with an impeller cavity communicated with the air inlet, the motor shell is arranged at the bottom of the impeller cavity and is provided with a motor cavity, and the side wall of the impeller shell is also provided with a first air outlet communicated with the impeller cavity; the impeller is arranged in an impeller cavity of the shell; the motor is arranged in the motor cavity and can drive the impeller to rotate.

In some embodiments, a first channel is reserved between one end of the impeller and the bottom of the impeller cavity, and the first channel is communicated with the impeller cavity;

the motor shell is also provided with a connecting piece which is used for installing the motor and enabling a second channel to be formed between the motor and the motor shell, and the second channel is communicated with the first channel; the motor casing is also provided with a second air outlet communicated with the second channel.

In some embodiments, the middle part of the impeller is further provided with heat dissipation holes at intervals around the center of the impeller, so that the impeller cavity is communicated with the second channel through the heat dissipation holes.

In some embodiments, a control housing, a battery housing, and a cover are also provided;

the control shell is used for installing a control board for controlling the motor;

the battery shell is used for being installed on a battery and supplying power to the motor;

the cover is removably engageable with the air inlet of the impeller housing.

Compared with the prior art, the impeller and the inflator pump provided by the utility model have the following beneficial effects:

1. the diameter of a second blade ring formed by encircling one end, close to the center of the impeller, of a second blade on the impeller is larger than that of a first blade ring formed by encircling one end, close to the center of the impeller, of a first blade, so that the flow area of one end, close to the center of the impeller, of the blade assembly can be increased, more gas can flow through the blade assembly, and the output power of the inflator pump is improved;

2. the ends of the first blade, the second blade and the third blade, which are close to the center of the impeller, are higher than the ends, which are far away from the center of the impeller, so that the flow area of the blade assembly, which is close to the center of the impeller, is further increased, and the gas output power of the impeller is also increased;

3. the outlet position angle of the first blade is at a first preset angle, the inlet installation angle is at a second preset angle, and the outlet installation angle is at a third preset angle, so that the impeller can be used for adapting to the use requirements of different scenes and different motors, meanwhile, the design enables the gas to better fit the blade to flow, the secondary flow loss and the separation loss are reduced, and meanwhile, the design can enable the change of the whole through flow section to be gentle, and the flow efficiency is improved;

4. the center of the impeller is upwards protruded to form a convolution structure with monotonically reduced cross section, so that the installation stability of the central shaft of the impeller can be improved, and the impeller has a diversion effect.

Drawings

The above features, technical features, advantages and implementation of the present utility model will be further described in the following description of preferred embodiments with reference to the accompanying drawings in a clear and easily understood manner.

FIG. 1 is a block diagram of an impeller;

FIG. 2 is a top view of an impeller;

FIG. 3 is a side view of an impeller;

FIG. 4 is an exterior view of an inflator;

FIG. 5 is a cross-sectional view of an inflator;

FIG. 6 is a cross-sectional view of the inflator in another orientation;

FIG. 7 is a cut-away view of a motor housing;

fig. 8 is a structural view of the connection base.

Reference numerals illustrate:

impeller 1, impeller disc 11, rotor structure 111, blade assembly 12, first blade 121, first preset angle 1211, second preset angle 1212, third preset angle 1213, second blade 122, third blade 123, housing 2, impeller housing 21, air inlet 211, first air outlet 212, first channel 213, motor housing 22, second air outlet 221, connector 222, connector holder 2221, connector bar 2222, connector ring 2223, second channel 223, motor 224, cover 23, control housing 24, battery housing 25.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

For simplicity of the drawing, only the parts relevant to the utility model are schematically shown in each drawing, and they do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In this context, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Referring to fig. 1 to 3, an impeller 1 provided herein includes a bladed disk 11 and a blade assembly 12; the blade assembly 12 surrounds the center of the impeller 11 and is sequentially arranged at one end of the impeller 11 at intervals, the first blades 121 and the second blades 122 are arranged at intervals, the second blades 122 are located on one clockwise side of the first blades 121, one end, close to the center of the impeller 11, of the first blades 121 is surrounded to form a first blade ring, one end, close to the center of the impeller 11, of the second blades 122 is surrounded to form a second blade ring, and the diameter of the second blade ring is larger than that of the first blade ring. The clockwise viewing angle in this application is the angle of view of the side of the blade assembly 12, i.e., the angle of view of FIG. 2; and the counterclockwise direction is the rotation direction of the impeller 1.

In this embodiment, the diameter of the second ring surrounded by the end of the second blade 122 on the impeller 1 near the center of the impeller 11 is larger than the diameter of the first ring surrounded by the end of the first blade 121 near the center of the impeller 11, which can increase the flow area of the gas inlet on the end of the blade assembly 12 near the center of the impeller 11, so that more gas can flow through the gas inlet, and the output power of the inflator pump is improved.

Specifically, one end of the vane assembly 12, which is close to the center of the vane disk 11, is a gas inlet, and one end of the vane assembly 12, which is far away from the center of the vane disk 11, is a gas throwing outlet; the ends of the first and second blades 121, 122 remote from the center of the blisk 11 enclose an outer ring and are both located at the edge of the blisk 11, while the diameter of the second blade ring is greater than the diameter of the first blade ring, such that the blades near the center of the blisk 11 are sparse and thus result in an increase in the gas flowable flow area.

It is noted that the diameter and the length of the second blade ring and the first blade ring are designed. For example, the diameter of the impeller 11 is a, the diameter of the first fan ring is b, the diameter of the second fan ring is c, (a-c)/(a-b) =70%, i.e., the radial length of the second blade 122 on the impeller 11 is 0.7 times the radial length of the first blade 121 on the impeller 11, and it is also understood that the second blade 122 is cut by 30% at an end near the center of the blade with respect to the first blade 121.

Further, referring to fig. 3, the ends of the first and second blades 121, 122 near the center of the blisk 11 are each higher than the ends far from the center of the blisk 11, and the ends of the first blades 121 near the center of the blisk 11 are higher than the ends of the second blades 122 near the center of the blisk 11.

In this embodiment, the ends of the first vane 121 and the second vane 122 near the center of the impeller 11 are higher than the ends far from the center of the impeller 11, which further increases the flow area of the vane assembly 12 near the center of the impeller 11, and increases the gas output of the impeller 1; while the second blade 122 is cut by the first blade 121 to a length of 30% of the length near the center of the blisk 11, and referring to fig. 5, the gap between the first blade 121 and the cover 23 is equidistant, which makes the end of the first blade 121 near the center of the blisk 11 higher than the end of the second blade 122 near the center of the blisk 11.

Preferably, the vane assembly 12 further comprises a third vane 123, the third vane 123 being located on a clockwise side of the second vane 122 and being remote from the first vane 121, an end of the third vane 123 being close to the centre of the vane disk 11 enclosing a third vane circle, the third vane circle being smaller than the second vane circle and having a diameter of the third vane circle being a second predetermined ratio to the diameter of the first vane circle.

In this embodiment, the vane assembly 12 further includes a third vane 123 that increases the number of vanes on the vane disk 11, so that the impeller 1 can better collect gas.

Specifically, for example, the diameter of the bladed disk 11 is a, the diameter of the first fanning is b, the diameter of the third fanning is d, (a-d)/(a-b) =45% -50%, that is, the radial length of the third blade 123 on the bladed disk 11 is 045.—0.5 times the radial length of the first blade 121 on the bladed disk 11, and it can be understood that the third blade 123 is cut 45% -50% at an end near the center of the blade with respect to the first blade 121.

It is noted that the ends of the third blades 123 near the center of the blisk 11 are each higher than the ends far from the center of the blisk 11; while the third blade 123 is cut to a greater extent than the second blade 122 relative to the first blade 121, the gap between the first blade 121 and the cover 23 is equidistant, which results in the end of the second blade 122 near the center of the blisk 11 being higher than the end of the third blade 123 near the center of the blisk 11. It is further noted that the vane assembly 12 may further include a fourth vane, and in general, the number of vanes is not limited to two or three specific values, and it is within the scope of the present application as long as the fan ring enclosed by the vane at the end near the center of the vane disk 11 sequentially increases and/or the end of the vane at the center of the vane disk 11 is higher than the end far from the center of the vane disk 11.

Further, referring to fig. 2, the outlet position angle of the first vane 121 is at a first preset angle 1211, the inlet mounting angle is at a second preset angle 1212, and the outlet mounting angle is at a third preset angle 1213.

In this embodiment, the outlet position angle of the first vane 121 is at a first preset angle 1211, the inlet installation angle is at a second preset angle 1212, and the outlet installation angle is at a third preset angle 1213, so that the impeller 1 can be used to adapt to the use requirements of different scenes and different motors 224, and meanwhile, the design enables the gas to better fit the vane flow, so that the secondary flow loss and the separation loss are reduced. More preferably, the design can make the change of the whole through-flow section smooth, and improves the flow efficiency.

Specifically, the first preset angle 1211 is in the range of 90 ° -130 °, the inlet mounting angle is in the range of 5 ° -15 °, and the outlet mounting angle is in the range of 20 ° -35 °.

Further, the center of the impeller 11 protrudes upward to form a convolution structure 111 with monotonically decreasing cross section for diversion; the blade assembly 12 is of an axial 2D design.

In this embodiment, the rotor structure 111 with a monotonically decreasing cross section formed by the upward protrusion of the center of the impeller 11 belongs to a flow channel design, which can increase the installation stability of the central shaft of the impeller 1 and has a flow guiding effect. The blade assembly 12 is designed in an axial 2D manner, and can be drawn in the axial direction, thereby facilitating production.

Further, with reference to fig. 4-6, the preferred embodiment provides an inflator comprising an impeller 1, a housing 2, and a motor 224 of any of the embodiments described above. The shell 2 comprises an impeller shell 21 and a motor shell 22, one end of the impeller shell 21 is opened to form an air inlet, the impeller shell 21 is provided with an impeller cavity communicated with the air inlet, the motor shell 22 is arranged at the bottom of the impeller cavity and is provided with a motor cavity, and the side wall of the impeller shell 21 is also provided with a first air outlet 212 communicated with the impeller cavity; the impeller 1 is arranged in an impeller cavity of the shell 2; a motor 224 is arranged in the motor cavity and is capable of driving the impeller 1 to rotate.

In this embodiment, a first channel 213 is reserved between one end of the impeller 11 and the bottom of the impeller cavity, and the other end is provided with a blade assembly 12, the first channel 213 is communicated with the impeller cavity and the motor cavity, so that part of the gas in the impeller cavity can reach the motor cavity through the first channel 213 and dissipate heat and cool for the motor 224; the motor 224 is disposed in the motor cavity and can drive the impeller 1 to rotate, so that the gas enters from the inlet of the front cover, is accelerated to gather by the rotation of the blades, and is thrown out from the periphery along the plane of the impeller 11 and is discharged through the first air outlet 212. Meanwhile, a second channel 223 is reserved between the motor 224 and the motor shell 22, and the second channel 223 is communicated with the first channel 213; the motor housing 22 is further provided with a second air outlet 221 communicating with the second passage 223. Referring to fig. 4, the second air outlet 221 is located at the bottom of the motor casing 22. It is further noted that the position of the second air outlet may be located not only at the end of the motor casing 22 remote from the impeller casing 21, but also at other positions of the motor casing 22, which is not further limited herein, as long as it can communicate with the first passage 213 through the second passage 223. The motor 224 is a hollow cup motor.

Specifically, the motor casing 22 is further provided with a connector 222 for mounting the motor 224 and forming a second channel 223 between the motor 224 and the motor casing 22. Referring to fig. 7 and 8, the connector 222 includes a connector 2221 having a mounting groove, the connector 2221 is disposed at the bottom of the motor casing 22, the periphery of the connector 2221 is connected to the outer side wall of the motor casing 22, and the motor 224 is mounted in the connector 2221 and is located in the motor casing 22 opposite to the connector, so that a second channel 223 is left between the motor and the motor casing 22. More specifically, a fixing groove is formed on a side wall of the connection base 2221, and a fixing block is formed on an outer side wall of the motor casing 22, and the fixing block is clamped with the fixing groove, so that the connection base 2221 is mounted at the bottom of the motor casing 22. Meanwhile, a vent communicated with the second air outlet 221 is further formed in the side wall of the connecting seat 2221, so that the air can be discharged from the vent.

More preferably, referring to fig. 7, the connection piece 222 includes a connection bar 2222 and a connection ring 2223, the connection bar 2222 is disposed between the motor 224 and the motor housing 22 at intervals, and the connection bar 2222 extends along the axial direction of the motor 224; the gaps between the connection bars 2222 form the second channels 223; the connecting ring 2223 is arranged at one end of the connecting strip 2222 close to the impeller 1 and is positioned at the bottom of the impeller cavity.

In this embodiment, the number of the connection bars 2222 is four, and the four connection bars 2222 are circumferentially spaced between the motor 224 and the motor casing 22, so that four second channels 223 are left between the motor 224 and the motor casing 22, the contact area between the connection piece 222 and the motor 224 and the motor casing 22 is greatly reduced, the space of the second channels 223 is larger, and more air flows can be passed. The connecting ring 2223 is arranged at one end of the connecting strip 2222 close to the impeller 1 and is positioned at the bottom of the impeller cavity relatively, so that the fixing firmness of the motor 224 can be increased, the motor 224 is prevented from shaking up and down, and the area of the second channel 223 is not occupied; meanwhile, the connecting ring 2223 can also prevent the gas gathered by the guide vanes from colliding at the center of the cavity bottom of the impeller cavity, so that the gas can quickly enter the second channel 223, and the kinetic energy loss of the gas flow is avoided.

It is noted that the impeller 1 is a semi-closed impeller 1, and a gap is left between the impeller 11 and the side wall of the impeller cavity, so that part of the gas in the impeller cavity doing the circumferential movement flows down along the gap between the impeller 11 and the side wall of the impeller cavity and enters the first channel 213.

Further, the middle part of the impeller 11 is further provided with heat dissipation holes at intervals around the center of the impeller 11, so that the impeller cavity is communicated with the second channel 223 through the heat dissipation holes.

In this embodiment, the middle part of the impeller 11 is further provided with heat dissipation holes around the center of the impeller 11 at intervals, so that the air can reach the second channel 223 through the heat dissipation holes and cool the motor 224, so that more air can reach the second channel 223, and the heat dissipation capability of the motor 224 is further improved.

Specifically, the number of the heat dissipation holes is 4, and the heat dissipation holes are round and surround the center of the blisk 11.

Further, a control case 24, a battery case 25, and a cover 23 are provided; the control housing 24 is used for mounting a control board for controlling the motor; the battery case 25 is used for being mounted on a battery and supplying power to the motor 224; the cover 23 can be detachably fitted to the air inlet 211 of the impeller housing 21.

In this embodiment, the cover 23 can be detachably covered on the air inlet 211 of the impeller shell 21, and when the inflator is not in use, the cover 23 can be covered on the air inlet 211 of the impeller shell 21 to prevent gas dust or foreign matters from entering the inside of the impeller shell 21, thereby greatly prolonging the service life of the inflator. The control board controls the motor 224 to work in a common way in the field, and the cost is low.

It is worth noting that the inflator pump optimizes the design of the runner and the blades, and can be externally connected with a USB interface, and smaller power is used for supplying power, such as a USB adapter and a charger.

It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims (10)

1. An impeller, comprising:

a leaf disc;

blade subassembly, blade subassembly sets gradually the interval around the impeller center is in impeller one end, including first blade, the second blade that the interval set up, the second blade is located clockwise one side of first blade, first blade is close to the one end at impeller center encloses into first impeller, the second blade is close to the one end at impeller center encloses into the second impeller, the diameter of second impeller is greater than the diameter of first impeller.

2. The impeller of claim 1, wherein the impeller is configured to move,

the first blade and the second blade are higher than the end far away from the center of the impeller, and the end of the first blade near the center of the impeller is higher than the end of the second blade near the center of the impeller.

3. The impeller of claim 2, wherein the impeller is configured to move,

the blade assembly further comprises a third blade which is located on one side of the second blade clockwise and is far away from the first blade, one end of the third blade, which is close to the center of the impeller, surrounds a third blade ring, and the diameter of the third blade ring is larger than that of the second blade ring.

4. The impeller of claim 3, wherein the impeller is configured to move,

one end of the third blade, which is close to the center of the leaf disc, is higher than one end of the third blade, which is far away from the center of the leaf disc;

and one end of the second blade, which is close to the center of the impeller, is higher than one end of the third blade, which is close to the center of the impeller.

5. The impeller according to any one of claims 1 to 4, wherein,

the outlet position angle of the first blade is at a first preset angle, the inlet installation angle is at a second preset angle, and the outlet installation angle is at a third preset angle.

6. The impeller of claim 1, wherein the impeller is configured to move,

the center of the impeller is upwards protruded to form a convolution structure with monotonically reduced cross section for diversion; the blade assembly adopts an axial 2D design.

7. An inflator pump, comprising:

the shell comprises an impeller shell and a motor shell, wherein one end of the impeller shell is opened to form an air inlet, the impeller shell is provided with an impeller cavity communicated with the air inlet, the motor shell is arranged at the bottom of the impeller cavity and is provided with a motor cavity, and the side wall of the impeller shell is also provided with a first air outlet communicated with the impeller cavity;

the impeller of any one of claims 1-6, disposed within an impeller cavity of the housing;

and the motor is arranged in the motor cavity and can drive the impeller to rotate.

8. An inflator according to claim 7 wherein,

a first channel is reserved between one end of the impeller and the bottom of the impeller cavity, and the first channel is communicated with the impeller cavity;

the motor shell is also provided with a connecting piece which is used for installing the motor and enabling a second channel to be formed between the motor and the motor shell, and the second channel is communicated with the first channel; the motor casing is also provided with a second air outlet communicated with the second channel.

9. The inflator of claim 8 wherein the inflation valve is configured to provide inflation gas,

and the middle part of the impeller disc is also provided with radiating holes at intervals around the center of the impeller disc, so that the impeller cavity is communicated with the second channel through the radiating holes.

10. The inflator of claim 7 wherein the inflation valve is configured to provide inflation gas,

a control shell, a battery shell and a cover are also arranged;

the control shell is used for installing a control board for controlling the motor;

the battery shell is used for being installed on a battery and supplying power to the motor;

the cover is removably engageable with the air inlet of the impeller housing.